//@COPYRIGHT@//
//
// Copyright (c) 2011, Tomoto S. Washio
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//   * Redistributions of source code must retain the above copyright
//     notice, this list of conditions and the following disclaimer.
//   * Redistributions in binary form must reproduce the above copyright
//     notice, this list of conditions and the following disclaimer in the
//     documentation and/or other materials provided with the distribution.
//   * Neither the name of the Tomoto S. Washio nor the names of his
//     contributors may be used to endorse or promote products derived from
//     this software without specific prior written permission.
// 
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL TOMOTO S. WASHIO BE LIABLE FOR ANY
// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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//
//@COPYRIGHT@//

#ifndef _FRAME_RATE_COUNTER_H_
#define _FRAME_RATE_COUNTER_H_

#include "common.h"
#include "TimeTicker.h"

class FrameRateCounter
{
private:
	float m_interval;
	bool m_enabled;
	int m_frameCount;
	TimeTicker m_ticker;

public:
	FrameRateCounter()
	{
		m_interval = 1;
		m_enabled = false;
		m_frameCount = 0;
	}

	~FrameRateCounter()
	{
	}

	void reset()
	{
		m_frameCount = 0;
		m_ticker.lock();
	}

	void enable(bool value)
	{
		m_enabled = value;
		reset();
	}

	void toggleEnabled()
	{
		enable(!m_enabled);
	}

	void update()
	{
		if (m_enabled) {
			m_frameCount++;
			float dt = m_ticker.tick();
			if (dt > m_interval) {
				printf("Frame Rate = %.1f/s\n", m_frameCount / dt);
				reset();
			}
		}
	}
};

#endif
